Cold-storage apparatus.



No. 659,468. Patented Oct. 9, |900. M. CDUPEB.

COLD STORAGE APPARATUS.

(Application led Mar. 5, 1900.

2 Sheets Sheet I.

{No Model.)

, m n n .e 0 o o o NWWMWQUMW. wwwmwwwwwwnummm o o o o o o o o o o o o oo o o o o o o o o o o o o N C O o o o o o o o o o o o o o o o o 9.o o oo o o o o o E N "u O o o o o o o O .o o o o o o o O e O o G O o o. o. oo W w A o o o o 0 o o o o o o o o o o O o o o o o o o o o o l NQS o o oo o o o o o o o o o o o o Q o o o o o o o o o mam O o o o o o o o o o oo o O O 0.0 O O O o o o o o o N o o o o o o o o o o o o o o o o\ o o o oo o o o o o \o m\ NGK. Q N. m @E m M m w. m l m s.- ,i m f. 5 1 m 1 N ew L u \r I||z||.|l|||H||M|H1|f im.: .m\ rul /F w .L I l l l l I l I IIl. l I I l... I I I l l I I l I l} l I I l l l l l l l l I i I Il ml; mI. n me D S |III)VI|IIIIIII|]III, l l I I I I l I I l I I I II mm.1111111 -illhlIZILVIIVH# m N H Patented Oct. 9, |900.

y m. cooPEn.

COLD..STOBAGE APPARATUS.

(Application led Mar. 5, 1900.: (N0 Nudel.) 2 Sheet-Sheet 2. W W YH 7HY-'' WM 2f/W W \/5\\ T 17| k/ih a /7 I wl u) 1'\ aoergzzzozzizg@ssosoggosszgg Z.: szsz'zafgzzssssay Qissf UL L y .UW L d lNvl-:NTOR

MADISON COOPER M @00a/7 v H ATTOHNE 5 n: oro-umo.. wAsHINoToN. n c.

@Miren STATES' PATENT OFFICE.

MADISON COOPER, OF MINNEAPOLIS, MINNESOTA.

COLD-STO RAG E APPARATUS.

SPECIFICATION forming part of Letters Patent No. 659,468, dated October9, 1900.

Original application i'lled July 3, 1899, Serial No. 722,633. Dividedand this application led March 5, 1900. Serial No. 7,338. (No model.)

To all whom, it may concern:

Be it known that I, MADISON COOPER, of Minneapolis, Hennepin county,Minnesota, have invented certain new and useful Improvements inCold-Storage Apparatus, of which the following is a specification.

This invention relates to improvements in air-cooling apparatus designedespecially for cold-storage houses, and particularly to anair-circulating system forming part of said apparatus; and the object ofthe invention is to provide means for securing a uniform distributionand circulation of the air throughout the storage-room.

The present application is filed as a division of my application, SerialNo. 722,633, filed July 3, 1899.

The invention consists generally in an aircirculating system comprisingmeans for forcing the cool air into the cold-storage rooms throughsuitable ducts arranged on the lower parts of the walls of the room,removing the warm air from the tops of said rooms through perforatedceilings and returning said air to the air-cooling room, from whichafter being cooled and preferably dried and purified it is again forcedthrough the storage-room, and this circulation continues as long asdesired.

The invention consists, further, in the construction and combinationshereinafter described, and particularly pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figurel is a longitudinal vertical section of a refrigerating apparatusembodying my invention, showing in dotted lines the arrangement of theair-cir culating ducts on the walls of the rooms, the air-cooling room,and the means for forcing the cold air into the rooms and drawing thewarm air therefrom and through the air-cooling room. Fig. 2 is ahorizontal section taken above the perforated ceilings of the rooms andshowing the arrangement of the ducts for drawing the warm air from therooms, this section being taken on line y y of Fig. 3. Fig. 3 is atransverse section through two rooms forming part of the cold-storageapparatus embodying my invention. Fig. 4 is a vertical section on line c.9c of Fig. 3.

In the drawings, 2 represents a suitable structure or building orportion thereof forming part or the whole of a cold-storage plant andwithin which the refrigerating apparatus is arranged. The building maybe of any suitable size, shape, or structure, provided with any desirednumber of rooms, and constructed of any suitable material.

The air-circulating system herein described may be applied to any numberof rooms, although in the accompanying drawings I have for illustrationshown its application to two rooms only. Arranged at any convenientpoint is the air-cooling room 3, withinl which is a series of pipes 5,through which any suitable refrigerant is circulated. I preferablyprovide in connection with these pipes a series of gutters 25 forholding a deliquescent salt. These gutters are described and claimed andtheir object is pointed out in my said application, Serial No. 722,633,and the process of keeping the refrigerating-pipes clear of frost bymeans of a deliqnescent salt is described and claimed by me in LettersPatent No. 644,847, issued March 6, 1900. The refrigerating-pipes may bearranged in' any suitable manner in the air-cooling room and anysuitable means may be used for circulating the refrigerating liquidthrough said pipes. I prefer to use for circulating the refrigeratingliquid through the pipes to the :air-cooling room the means shown anddescribed in Letters Patent No. 629,341, issued to me July 25, 1899. Anair-duct 7 is connected to the air-cooling room and to a suitablefancasing 9, within which may be located a fan of any suitableconstruction. The position of the fan is indicated by the dottedcirclein Fig. 1. An air-duct 11 leads from the fan-casing 9 and extendsto the several rooms 4 4, which it is desired to maintain at a uniformtemperature 'through their top, bottom, and side walls, so

as to distribute the air as uniformly as possible throughout the lowerparts of the rooms.

I also provide each room with a perforated ceiling 1Q, extending acrossthe top of the room and arranged a short distance below the usualceiling of the room, so that the space above the perforated ceilingthrough which.

the warm air at the top of` the room is uniformly collected ortakr-inout. A return-duct 2l is connected to the space above each of theperforated ceilings, (see Figs. 2 and 3,) and a portieri of theperforated ceiling nearest the duct is preferably placed on an incline,as shown in Fig. 4, so as to permit the ready passage of the air intothe return-ducts 2l. The return-d ucts 21 con neet, as shown in Figs. 1and 2, with the air-cooling room 3. By the means described the air iscaused to pass from the air-cooling room through the duct 11 and thebranch ducts 13 into the lateral or transverse ducts 17, by which meansit is evenly distributed through the lower parts of the rooms. Suitableslides or gates 18 may be provided at the points where the ducts 13connect with the ducts 17, by means of which the passage of air into theducts 17 or any of them may be regulated or cut 0E. The air passing intothe room or rooms through the ducts 17 is distributed evenly in thelower part of the room and rises and passes through the perforations inthe perforated ceilings. These ceilings form means of exit for the airat the tops of the rooms, and as the tendency of the air is to passvertically as it becomes warm it follows that the cold air beingdistributed through the lower parts of the rooms and the warmer airbeing evenly drawn off at the tops of the rooms auniform temperaturethroughout these rooms will be maintained.

The forced-air-cireulating system herein described secures apractically-uniform temperature through the storagerooms,and when usedin connection with my process and means for purifying and drying the airhereinbefore referred to it secures purity of air and a proper degree ofdryness or humidity thereof. The air in passing through the rooms isforced to cover with practical uniformity the entire cross-sectionalarea of each room. This is owing mainly to the use of the false ceilingat the top of each room and the side air-ducts by means of which air issupplied to the lower parts of the room. The side ducts are notobstructed by articles piled up ou the door of the room, nor candirtwhich accumulates on the floor get into these ducts. The air fromthe side ducts passes laterally through and around the articles placedin the storage-room and then passes upward and through the perforatedceilings. The perforations inthe side ducts are comparatively-smallholes placed quite neartogether,obviating allstrong drafts and at thesame time insuring a very penetrating circulation, which will not allowof any dead corners. It is preferable to make the perforations twice asnumerous on the bottom of the air-ducts 17 as on the top and to makeonly comparatively few such perforations in the front or face of theduct. This insures the greatest supply of cold air along the floor ofthe room, and thus compels the cold air to come in contact with anyarticles on the ioor of the room, and as the air rises with all of thearticles above the fioor. It is also preferable to make the holes in thefalse ceiling more numerous near the center of the room at a pointfarthest from the cold-airducts and more widely separated as theyapproach the sides of the room directly over the cold-air duct 17. Withthis system of forced circulation a vigorous oirculat-ion of the air maybe obtained and the moisture and impurities which are given off by thearticles in the st.orageroom are quickly removed. They are not allowedto remainV in the vicinity of the lstored articles to work mischief, butare promptly hurried offl to the air-cooling room, where they are forthe most part absorbed or rendered harmless. It is also with this systemand the means described in my pending application and the processdescribed in my patent of March 6, 1900, as easy to control the humidity of the air as it is to control the temperature and with no badeffect on the other conditions in the storage-room.

As the details of the construction of the apparatus herein described maybe considerably modified or changed without departing from my invention,I do not confine myself to such details as are herein shown anddescribed.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. In a cold-storage apparatus, the combination, with aroom provided with a perforated false ceiling, and with perforatedtransverse ducts ou the lower part only of its walls, of means forforcing cold air into the room through said ducts and therebydistributing the cold air through the lower part bf the room, and meansfor conducting the air off at the top of the room through saidperforated ceiling, substantially as described.

2. The combination, in a cold-storage apparatus, with means for coolingthe air, of a storage-room provided with transverse perforated ductsarranged upon the lower part only of its walls, a perforated falseceiling forming an air-duct at the top of the room, and means forconducting air to said transverse ducts and from said perforatedceiling, for the purpose set forth.

3. The combination, in an air cooling and circulating system, with meansfor cooling the air, of storage-rooms provided with transverse ducts onthe lower parte only of their side walls, and with perforated falseceilings, ducts leading from the air-cooling room to said transverseducts, return-ducts leading from the space above said ceiling to saidaircooling room, and means for drawing the air from said air-coolingroom and forcing it through said cold-storage rooms, for the purpose setforth.

IIO

4. In a cold-storage apparatus, the combination, With a series ofstorage-rooms, of an air-Cooling room, distributing-ducts leading fromsaid air-cooling room to said storageroom, perforated transverse ductsarranged upon the lower parts only of the Walls of the rooms andconnected With the distributingduots, perforated ceilings arranged overthe storage-rooms, and return-duets leading from the spaces above saidceilin gs to said air-cooling roonn7 for the purpose set forth.

5. In a cold-storage apparatus, the combination, With a storage-roomprovided with a perforated false ceiling, of transverse ducts on thelower part of the Walls of said storage-room, said ducts being providedon the front and at the top and bottom thereof with suitableperforations, means for forcing cold air into said storage-room throughsaid duets, and means for conducting theair oi at the top of the roomthrough said perforated oeiling, substantially as described.

In testimony whereof I have hereunto set my hand this 23d day ofFebruary,l 1900.

MADISON COOPER. In presence of A. C. PAUL, M. O. NOONAN.

